doane



(No Model. 2 Sheets-Sheet 1.

T. P. DOANE. METHOD OF AND- MEANS FOR PRODUCING POINTED FLAMES. 7 No. 305,439. Patented Sept-23, 1884.

2 Sheets--S.heet 2.

(No Model.)

T. P. DUANE. METHOD OF AND MEANS FOR PRODUCING POINTBD FLAMES. No. 305,439.

Patented Sept. 23, 1884.

u. wzmm Pholo-Lilhugmphor. Washington. a c.

v UNITED STATES PATENT tries.

TRUMAN P. DOANE, OFBROOKLYN, NEW YORK.

METHOD OF AND MEANS FOR PRODUCINGPOINTED FLAMES.

SPECIFICATIQN forming partof Letters Patent'No. 305,439, dated September 23, 1884.

Application filed November 5, 1883. (No model.)

To all whom it may concern.-

Be it known that I, TRUMAN 1?. DOANE, of Brooklyn, county of Kings, and State of New York, have invented certainnew and useful Improvements in Methods of and Means for Producing Pointed Flames, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings and to the letters of reference marked IO thereon.

Myinvention has relation to that class of devices employed for producing a pointed flame, like unto the blow-pipe flame, for brazing, assaying, and other purposes requiring a high de- I 5 gree of heat. i v

The object of my invention is, primarily, to produce the pointed flame without the use of the separate blow-pipe, as heretofore orficient burner, by which the pointed flame may be produced. To accomplish all of this my improvements involve a novel and useful method of producing the pointed flame, and 2 5 certain novel and useful arrangements or combinations of parts of the apparatus and principles of operation, all of which will be herein first fully described, and then pointed out in the claims.

In the accompanying drawings,forming part of this specification, Figure 1 is a partial section and elevation of a vapor-burning torch arranged for operation in accordance-with my invention and involving the principles there 3 5 of. Fig. 2 is a side elevation of theiburner shown in Fig. 1, the same being detached from the other parts; and Fig. 3 is an end elevation of the same. Fig. 4 is an axial section of the burner, the arrows representing the directions taken'by the currents of air and gas when the burner is in operation.

In all these figures like letters of reference, wherever they occur, indicate corresponding parts.

Heretofore the blow-pipe flame has been produced by injecting a current of air into the flame, using a blow-pipe, which must be operated independently of the burner, (either by the lungs of the operator or by some separate blowing or blast-producing apparatus.) Accord ing to my invention I feed the gas or material for producing the flame under pressure of such as at B. dinarily employed, and a secondary object is 20 the production of a simple, cheap, and efconsiderable pressure, as is well understood.

degreethat it will carry with it a current of air sufficient to insure the required combus tion, and then I reduce the burning gas and air to a pointed flame, thus making the gas, as it were, do its own blowing, and obviating all necessity for the separate blow-pipe or separate blowing apparatus. The gas may be put under pressure by various means. The apparatus shown in the drawings is one means which may be employed, and will serve as an example.

A is the reservoir of a vapor-burning torch calculated tobe supplied with any easily-vaporizing material'such as naphtha, due-the same being fedto the burner underpressure, in this case produced by pumping air into the reservoir over the material by any air-pump,

O is the pipe leading from the reservoir to the burner above, and conducting oil or liquid thereto to supply the flame.

D is the main body of the burner, having a needle-screw, as F, for regulating the flow of gas. Like other vapor-burners, this burner is kept highly heated, (while in operation,) and the heat vaporizes the liquid fed to the burner, the vapor issuing from the jet-orifice under In the path of the gascurrent I place a dij rector, a, by which the gas and air mingled therewith is somewhat reduced, so that inflame it will be narrowed down. In advance of the director a, I place another director, b,at such distance that it will receive thercurrent of air and gas from a, together withwhatever addition of air may be inducted by the rapid current after leaving a. The perforations 0 through a and b may be cylindrical or cone shaped, but .are preferably made so as best to reduce the size of the flame. With these two directors the burner will operate to very good advantage 5 but in case a finer or better pointed flame be required I add a third director in advance of I), as shown at 0, the same being arranged to receive the current from b, together with whatever volume of air'may be added thereto, as the current passes rapidly from b to c. The current of gas under pressstead of spreading out into a wide sheet of 5 ure induces the inflow of air upon principles well understood, and from the above it will be seen that the gas is thus made to draw in with t all the air that may be required, dispens 'ing with the separate blow-pipe, as contemplated by my invention.

? The directors 1) and may be made adj ustable back and forth, as by the set-screws d and 6, so as to regulate the size of the flame. according to the pressure upon the issuing gas oraccording to other circumstances. The spaces between the directors are found to operate advantageously in affording overflow-passages, so that in the event of too great a flow of gas andairthe surplus can escape without materially altering the size or length of the pointed flame. As will be readily understood, the directors may be made in a great variety of shapes, and may be increased in number to any extent desired, so long as the result is the production of the pointed flame.-

mingling with the gas. vents odor arising from burning naphtha. I- find it advantageous to leave an air-opening To insure a steady flame or prevent interference with the current of gas and air, I surround the burner with a perforated shield or guard, F, the same being made sufficiently open to afford-a free inflow of air, ample for This guard also prearound the burner, and between it and the shield F, as shown in Fig. 3, though this may not be necessary in the majority of cases. The pressure of gas may be produced'in any way. The vapor-burning torch is a'simple,

cheap, and handy means of producing the be directed toward'any point.

is shown as mounted upon a stem, G, of a ball,

pressure, but it is not necessary that the material-therein be induced to flow to the burner by air-pressure, as in the example represented in the drawings. The reservoir might be elevated above the burner, andthe liquid be fed by gravity, the pressure produced depending upon the height of the reservoir above the burner.

When my improved burner is applied upon a portable apparatus, such as shown in the drawings, it will be found advantageous to mount it upon a base, so that the burner may The reservoir H, secured in a base-plate, K. This makes a ball-andsocket joint, upon which the apparatus may be turned and held in any position required.

L is a clamping-plate by which the ball may be tightened as may be required to compensate for any wear.

The burner constructed and arranged for operation upon the principles above set forth has beenfound in practice to afford, an excellent pointed flame, with a high degree of heat and marked steadiness and uniformity superior to any of the ordinary blow-pipe arrange- .ments.

Having now fully described my invention, what I claim as new, and desire to secure by Letters Patent isas it finally issues from the burner it will produce the pointedflame, said directors being- ,located in the path of the issuing gas and combined with the burner, substantially as and for the purposes set forth.

3. A series of air and gas directors located in the path of the issuing gas from the burner,

and arranged to gradually reduce the size ofthe current of combined air and gas, said series being arranged with air-openings or overflow-passages, substantially as andfor the purposes set forth. Y

, 4.. In a burner provided with a series of air and gas directors arrangedto produce a pointed flame, as explained, by gradual "reduction of the current of combined air and gas, the combination, with the burner, of a perforated shieldor guard, substantially as and for thepurposes set forth.

5. In combination with an apparatus adapted to supply liquid fuel to the burner under press ure, a vapor-burner provided with air'and gas directors, arranged to reduce the currentof combined air and gas, so as to produce'the pointed flame, substantially as and for the purposes set forth.

In testimony that I claim the foregoing I have hereunto set my hand in the presence of two witnesses.

TRUMAN P. DOANE.

Witnesses:

OTTO VoN ELLER, WORTH Oseoon. 

